一次纯化菌种的工作,已有许多单位创造了先进经验。在工作实践中,我们采用孢子移植法纯化菌种。据试验观察,只要选择适当的虫尸和合理的消毒处理,一般经移植一次即纯化。具体做法是: 1.虫尸的选择:在林中(最好是未放过菌) 及时选择新鲜、孢子层厚、颜色乳白、杂 A number of units have created advanced experience in the work of a purified strain. In practice, we use spore transplantation to purify the species. According to experimental observation, as long as the appropriate selection of dead worms and reasonable disinfection, usually after a transplant that is purified. Specific approach is: 1. The choice of insect body: in the forest (preferably not let go of bacteria) in a timely manner to choose fresh, spore layer thickness, color milky white, miscellaneous